/// <summary>
/// Given a string, contents, and format block in the string, fills format block with contents.
/// </summary>
/// <param name="template">String with block to be filled.</param>
/// <param name="formatBlock">The format of the block to be filled in the template string.</param>
/// <param name="contents">String to put into the template block.</param>
/// <returns>The fill block.</returns>
private static string FillBlock(string template, FormatBlock formatBlock, string contents)
{
string filledTemplate = template;
string trimmed = contents.PadLeft(formatBlock.Length, '0');
trimmed = trimmed.Substring(trimmed.Length - formatBlock.Length);
filledTemplate = filledTemplate.Remove(formatBlock.StartIndex, formatBlock.Length);
filledTemplate = filledTemplate.Insert(formatBlock.StartIndex, trimmed);
return(filledTemplate);
}
/// <summary>
/// Extracts the number sequence value from the receipt mask.
/// </summary>
/// <param name="receiptMask">Template mask for receipt identifier.</param>
/// <param name="receiptId">The receipt identifier to extract number sequence value.</param>
/// <returns>Returns the number sequence value of the receipt.</returns>
public static long GetNumberSequenceFromReceipt(string receiptMask, string receiptId)
{
ReadOnlyCollection <FormatBlock> formatBlocks = GetFormatBlocks(receiptMask, new[] { '#' });
FormatBlock formatBlock = formatBlocks.SingleOrDefault();
if (formatBlock != default(FormatBlock))
{
string numberSequenceValue = receiptId.Substring(formatBlock.StartIndex, formatBlock.Length);
long numberSequence;
if (long.TryParse(numberSequenceValue, out numberSequence))
{
return(numberSequence);
}
}
return(0L);
}
private bool Equals(FormatBlock other)
{
return(this.StartIndex == other.StartIndex && this.Length == other.Length);
}